Try calling summit. I am sure they are the Fel-Pro 1074 but they will be able to tell you for sure. It would only take a few minutes.....

 

True... However I was lazy and just looked at the gaskets and they looked super thin, so I imagine they are the 1074's. I went ahead and installed my heads. I am now having a heck of a time getting that impeller out of the water pump housing. May have to have a machine shop press it out.

 

Sorry, I meant that last post towards myextreme1.
You must be doing the electric water pump. If so, you'll need a press. I pressed out my impellar at work using a hydraulic press. It was stubborn as hell. I am sure the machine shop would charge a minimal fee.